Annual Symposium Reliability and Maintainability, 2004 - RAMS最新文献_第6页

Diagnostic expert systems from dynamic fault trees 动态故障树诊断专家系统

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285489

T. Assaf, J. Dugan

引用次数: 38

An efficient factoring algorithm for computing the failure-frequencies of telecommunications networks 一种计算电信网络故障频率的有效分解算法

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285432

M. Hayashi, T. Abe

引用次数: 1

How to integrate inter-component dependencies into combinatorial availability models 如何将组件间依赖关系集成到组合可用性模型中

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285452

C. Trinitis, M. Walter

{"title":"How to integrate inter-component dependencies into combinatorial availability models","authors":"C. Trinitis, M. Walter","doi":"10.1109/RAMS.2004.1285452","DOIUrl":"https://doi.org/10.1109/RAMS.2004.1285452","url":null,"abstract":"In this paper, a novel modeling method for highly available systems is proposed. As an input, the model accepts common reliability block diagrams, which are widely used because of their excellent manageability. However, unlike traditional solution methods for block diagrams, the proposed method also supports the attribution of the model with several kinds of inter-component dependencies. Thus, the evaluation of such a model yields much more realistic results, similar to using state-based models like Markovian chains (MC) or generalized stochastic Petri nets (GSPN. [M. Ajmone Marson et al., 1995, R.A. Saner et al., 1996]). However, compared to traditional state-based models, the proposed method offers a much better manageability. This means that all models are intuitive, clear, and can easily be modified, as well as created and refined in a stepwise manner. These advantages are exemplified by a realistic industrial application from the area of telecommunications. As the proposed models cannot be solved with classical solution methods for combinatorial availability models, we propose a new evaluation technique which is based on a transformation of the input models into semantically equivalent state-based models. This solution technique was implemented in the software tool OpenSESAME (simple but extensive structured availability modeling environment).","PeriodicalId":270494,"journal":{"name":"Annual Symposium Reliability and Maintainability, 2004 - RAMS","volume":"81 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124481798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 11

A new approach to gathering failure behavior information about mechanical components based on expert knowledge 基于专家知识的机械部件失效行为信息采集新方法

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285429

P. Jager, B. Bertsche

引用次数: 34

Capturing failure history over the life of equipment 捕获设备生命周期内的故障记录

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285443

Michel Galley

引用次数: 1

An alternate analysis of a 2x2 DOE using a contour plot of Weibull joint parameter confidence regions 使用威布尔关节参数置信区域等高线图的2x2 DOE的替代分析

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285471

E.A. Ware, D. Cooke

{"title":"An alternate analysis of a 2x2 DOE using a contour plot of Weibull joint parameter confidence regions","authors":"E.A. Ware, D. Cooke","doi":"10.1109/RAMS.2004.1285471","DOIUrl":"https://doi.org/10.1109/RAMS.2004.1285471","url":null,"abstract":"Before beginning an accelerated test program for implantable cardiac defibrillator/pacemaker leads, an initial phase of testing was performed to determine if test stations and operators could be used interchangeably. DOE and Monte Carlo simulations were used to set up the 2/spl times/2 test matrix and determine if the test would produce sufficient data. The Weibull analysis methods, including the contour plot, proved to be useful for analyzing the fatigue failure data as well as providing some insight to the analysis methods. The test results demonstrated no difference between the four runs at the 85% confidence level; however, one run was subtly different from the others. A subsequent investigation into the combined data indicated that the three parameter Weibull distribution is more suitable than the two parameter Weibull distribution. The two parameter Weibull must be used for the individual runs, due to the smaller samples sizes, even though the three parameter distribution may represent the best fit to the total population. The observed run-to-run variation may partially be due to the choice of the simpler two parameter Weibull distribution. It is concluded that the effects of test station and operator on Weibull parameters /spl beta/ and /spl eta/, are not significant at the 85% confidence level (this conclusion also holds for higher confidence levels because the intersecting area increases as the confidence level increases). It is also concluded that the three parameter Weibull model yields a better fit than the two parameter Weibull model, for this particular lead specimen, this test method, and when the sample size is sufficient.","PeriodicalId":270494,"journal":{"name":"Annual Symposium Reliability and Maintainability, 2004 - RAMS","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115558963","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

Use of PSA tools and techniques in life cycle management of maintenance and operation of complex system 在复杂系统的维护和运行的生命周期管理中使用PSA工具和技术

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285496

I. Vrbanic, Z. Šimić, I. Basic

引用次数: 2

Fault-tolerant network reliability and importance analysis using binary decision diagrams 基于二元决策图的容错网络可靠性和重要性分析

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285434

L. Xing

引用次数: 19

Lessons learned from development and implementation of a strategic life cycle model 从战略生命周期模型的开发和实施中获得的经验教训

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285520

P.K. Au, S. Ma

{"title":"Lessons learned from development and implementation of a strategic life cycle model","authors":"P.K. Au, S. Ma","doi":"10.1109/RAMS.2004.1285520","DOIUrl":"https://doi.org/10.1109/RAMS.2004.1285520","url":null,"abstract":"A strategic life cycle model, coined triple \"A\" (adolescence, adult and aging), has been developed in 2000 at Nortel networks to drive repair outsourcing and to allocate resources freed up from outsourcing to accelerate quality growth of new products. A three-layer TOP (triple \"A\" - organizing people) strategy was then established to drive the implementation of the triple \"A\" effectively. The far-ranging impact of the triple \"A\" upon plant layout as well as roles and responsibilities is reviewed in this paper. For one of the pilot products, the cost avoidance due to early resolution of quality problems is estimated to be in excess of $7 million. The factors that have contributed to the success of this model are briefly discussed, and there are several key lessons learned from the implementation process. These include: a paradigm shift on the concept and value of repair, quantum improvement requires preventing \"birth\" defects in the design phase, synergy between various initiatives, mathematical correlation to expand the capability of the triple \"A\". Lastly, it is suggested that further research be done to explore the application of the model to practically all-human endeavors as a basis of continuous quality improvement. To substantiate this suggestion, the paper briefly sketches the concept of the triple \"A\" at several levels: vision (perspective), science (predictive), and engineering (prescriptive).","PeriodicalId":270494,"journal":{"name":"Annual Symposium Reliability and Maintainability, 2004 - RAMS","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-08-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114521094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

An extended reliability growth model for managing and assessing corrective actions 用于管理和评估纠正措施的扩展可靠性增长模型

Annual Symposium Reliability and Maintainability, 2004 - RAMS Pub Date : 2004-08-24 DOI: 10.1109/RAMS.2004.1285426

L. H. Crow

引用次数: 63